Removal of methylene blue from aqueous solution using zeolite synthesized from different coal fly ashes samples

Quimica nova

Bruno, Mariza¹  Fungaro, Denise Alves¹ 

[1] Instituto de Pesquisas Energéticas e Nucleares, São Paulo, Brasil

关键词: zeolite;    methylene blue;    dye adsorption.;   

DOI  :  10.1590/S0100-40422009000400024

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Batch sorptionexperiments were carried out to remove methylene blue from its aqueous solutionsusing zeolites synthesized from fly ashes as an adsorbent. The adsorbents werecharacterized by XFR, XRD and SEM. Nearly 90 min of contact time are found tobe sufficient for the adsorption of dye to reach equilibrium. Equilibrium datahave been analyzed using Langmuir and Freundlich isotherms and the results werefound to be well represented by the Freundlich isotherm equation. Adsorptiondata were fitted to both Lagergren first-order and pseudo-second-order kineticmodels and the data were found to follow pseudo-second-order kinetics.

【 授权许可】

CC BY